Infrared absorption spectroscopy and chemical kinetics of free radicals: Progress report, 1 March 1985 to 1 February 1987

Technical Report · Thu Jan 01 00:00:00 EST 1987

OSTI ID:5485457

Curl, R F; Glass, G P

Infrared kinetic spectroscopy using excimer laser flash photolysis and color center laser probing has been used to measure the branching ratio of the deNOx reaction: NH/sub 2/ + NO ..-->.. HN/sub 2/(.) + OH ..-->.. N/sub 2/ + H/sub 2/O. The amidogen radical, NH/sub 2/, was produced by ArF photolysis of NH/sub 3/. Infrared absorptions of OH and H/sub 2/O were measured to determine the absolute contributions of the OH and H/sub 2/O product channels. Using color center laser kinetic spectroscopy to follow the time decay of C/sub 2/H transient absorption, the rate constants for the reactions of C/sub 2/H with H/sub 2/, O/sub 2/, C/sub 2/H/sub 2/, and NO have been measured. The C/sub 2/H was produced by ArF excimer (193 nm) flash photolysis of trifluoropropyne for the H/sub 2/, O/sub 2/, and NO reactions. In the case of the C/sub 2/H/sub 2/ reaction, C/sub 2/H was produced by flash photolysis of acetylene. An investigation to determine the identify of the products of the reaction between C/sub 2/H and O/sub 2/ has been initiated. Also, electronic transitions of C/sub 2/H and C/sub 2/O have been studied. New bands have been identified and rotationally analyzed. 1 tab.

• Research Organization: Rice Univ., Houston, TX (USA)
• DOE Contract Number: FG05-85ER13439
• OSTI ID: 5485457
• Report Number(s): DOE/ER/13439-3; ON: DE88006536
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ABSORPTION SPECTROSCOPY
ACETYLENE
ALKYNES
AMMONIA
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
DECOMPOSITION
DENITRIFICATION
DOCUMENT TYPES
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
FLUIDS
GASES
HYDRIDES
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
KINETICS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PROGRESS REPORT
PROPYNE
RADICALS
REACTION INTERMEDIATES
REACTION KINETICS
REMOVAL
SPECTROSCOPY
YIELDS